Patent US3774647A successfully refreshed from Google Patents.
US3774647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line stopping assembly using an inflatable element
Assignee: Mueller Co
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Filing: 1971-11-04
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Granted: 1973-11-27
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Expires: 1991-11-04
Abstract
Abstract An apparatus for plugging a conduit carrying a fluid under pressure is provided and which is structured to cooperate with a valved fitting of the type used in forming a lateral opening in the conduit and which is sealingly mounted on the exterior of the conduit; a carrier member is adapted to be secured to the fitting above the gate valve carried on the fitting; a plug element having an inflatable member is pivotally attached to an elongated spindle which extends through a sealed opening in the carrier member; a hollow support spindle is carried on the carrier member about the first mentioned spindle and which supports at its lower end a hub member which engages and rests upon the rim of the opening formed by the cutter; the plug element on its periphery is hingedly attached to the interior of the hub member so that movement of the first mentioned spindle transversely of the longitudinal axis of the conduit will move the plug element from its retracted position to its operating position; fluid passages are provided on the carrier member, between the spindles and a flexible hose member to supply and exhaust a gas under pressure to and from the inflatable member.
Inventors
- 👤 N Saha
- 👤 J Daghe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:00
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/124; F16K; F16K7/00; F16K7/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
202 words
A pipe plugging assembly for use with a fitting of th type having a through bore, a first open end for surrounding a lateral opening formed in a pipe and a second open end spaced from said first end, said assembly comprising: a carrier member having means for closing the second open end of the fitting, an inflatable pipe plugging element, a pair of spaced apart discs for supporting said inflatable pipe plugging element, an annular hub member having an exterior surface and abutment means formed on said exterior surface, said hub member having a diameter such that said hub member will interfit with a lateral opening formed in the pipe, a pivot pin fixedly supported on the interior surface of said hub member, one of said discs being pivotally mounted on said pin, said carrier member having an opening therethrough, movable positioning means extending through said opening in said carrier member and having a portion connected to said pivotally mounted disk so that, when said positioning means are moved relative to said opening in said carrier member, said pipe plugging element supported on said disks will be moved between a pipe plugging position and a retracted position on said pivot pin.
Claim 2
Dependent Claim
202 words
A pipe plugging assembly for use with a fitting of th type having a through bore, a first open end for surrounding a lateral opening formed in a pipe and a second open end spaced from said first end, said assembly comprising: a carrier member having means for closing the second open end of the fitting, an inflatable pipe plugging element, a pair of spaced apart discs for supporting said inflatable pipe plugging element, an annular hub member having an exterior surface and abutment means formed on said exterior surface, said hub member having a diameter such that said hub member will interfit with a lateral opening formed in the pipe, a pivot pin fixedly supported on the interior surface of said hub member, one of said discs being pivotally mounted on said pin, said carrier member having an opening therethrough, movable positioning means extending through said opening in said carrier member and having a portion connected to said pivotally mounted disk so that, when said positioning means are moved relative to said opening in said carrier member, said pipe plugging element supported on said disks will be moved between a pipe plugging position and a retracted position on said pivot pin.
Claim 3
Dependent Claim
68 words
The pipe assembly as claimed in claim 1 wherein said disks have a connecting member interconnecting said disks in fixed, spacd apart relation to one another and said inflatable pipe plugging element comprises a flexible ring-shaped annulus having spaced apart annular surfaces, each of said annular surfaces engaging and being supported by one of said disks, a first one of said disks being connected to said pivot pin.
Claim 4
Dependent Claim
152 words
The pipe plugging assembly as claimed in claim 2 wherein said abutment means on said exterior surface of said hub member comprises a bead formed circumferentially about said exterior surface for engaging the exterior surface of the pipe to limit the extent to which said hub member can be inserted into the opening in the pipe, saId hub being secured to a hollow, elongated spindle having a first and a second end, said carrier member having a first and second side, said first end of said spindle being secured to said hub and being disposed on said first side of said spindle, at least a portion of said spindle being disposed in said opening in said carrier member with said second end of said spindle being on said second side of said carrier member, said opening in said carrier member having means for sealingly engaging said portion of said spindle disposed therein.
Claim 5
Dependent Claim
79 words
The pipe plugging assembly as claimed in claim 2 wherein the second of said disks is provided with a plate segment having a portion extending radially outwardly from said disk to an extent such that when said pipe plugging assembly is mounted on a said fitting, and said plugging element is moved from said inoperative to said operative position, said plate segment will engage the interior surface of the pipe along at least a portion of its pivotal travel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |